John w



(No Model.)

J.- W.-WINTERS. MARINE ENGINE GOVERNOR.

Patented Mar. 27', 18 94.

N) III/Fenian UNITED STATES PATENT OFFICE.

JOHN W. WINTERS, OF ST.. PAUL, MINNESOTA, ASSIGNOR OF FIVE-EIGHTHS TO ALBERT J. KOS, JERRY WEBBER, EDMUND R. GREENWOOD, DEVILLE H. KENT, AND JOHN GELINA, OF SAME PLACE. I

MARINE-ENGINE GO VERNOR.

SPECIFICATION forming part of Letters Patent No. 517,087, dated March 27, 1894.

Application filed July 6, 1893- Serial No. 479,778. (No model.)

To all whom it may concern.-

Be it known that I, JOHN W. WINTERS, of St. Paul, Ramsey county, Minnesota, have invented certain Improvements in MarineEngine Governors, of which the following is a specification.

My invention relates to improvements in devices for preventing the racing of steamship screws, and consists in the features of construction hereinafter and claimed.

In the accompanying drawings forming part of this specification, Figure 1 represents a sectional side elevation of my device shown in position in the hull of the vessel, the vessel and engine being shown conventionally. Fig. 2 is a sectional detail of the cut ofi valve in the steam pipe leading to the engine. I Fi 3 is a detail, cross section of the float and its inclosing case, and Fig. 4 is a detairof the valve air vent at the top of the stand pipe.

In the drawingsA representsthe hull of the vessel, and 2 the screw mounted upon the shaft 3, which is operated by suitable connections with the engine B. Arranged adjacent to the same, but preferably within the hull of the vessel, is the vertical stand pipe 4 having its lower end open to the water. Its top is closed, but provided with check valves 5, permitting free inlet and outlet of the air, but which will be closed by water rising to the top of the pipe. This pipe is enlarged nearly on a level with the top of the screw forming the cylindrical chamber 6. Ooncentrically within this chamber is arranged the float case or cylinder 7, being secured in place by the radiating ribs 8 attached to the chamber wall. I

The lower end of the case 7 is open, but it is closed at the top, and provided with a series of air vents 9 in the side wall near the top. Within the case is arranged the float 10, preferably cylindrical in form and supported by means of the rod 11, extending through a suitable stuffing box 12 at the top of the pipe 4. This rod is connected to the bell crank lever 13, having a suitable pivotal support, the other arm of the crank being connected to the stem 14 of the slide valve 15, which controls the admission of steam from the pipe 16 to particularly described the cylinder 17. In this cylinder is arranged the piston 18, its rod 19 being connected to the arm 20 of the valve 21, arranged in the steam pipe 22 leading to the engine B.

The position of the partsshown in Fig. 1, is that which they take when the screw is lifted out of the water, the float 10 being shown at its lowest position, and the valve 21 closed.

The operation of the device is easily understood from the drawings. When the screw is submerged, the water forces the float 10 toward the top of the case 7, thereby causing the slide valve 15 to be forced forward, and to admit steam through the pipe 16 to the cylinder back of the piston 18, thus driving it to the opposite end of the cylinder and opening the valve 21. is about to leave the water, the water falls in the pipe 4 allowing the float to drop, thus reversing the position of the slide valve and operating the piston in an opposite direction to close the valve 21, thereby cutting off steam from the engine and preventing racing of the screw.- The cover of the closed end of the case 7 prevents the water from pouring down upon the top of thefloat, while the openings 9 give free passage to the air. Should the water rise in the pipe 4 to the valves 5, it automatically closes them, thus preventing the flooding of the vessel therefrom.

I claim- 1. In a device of the class described, the com bination with the out off mechanism, of the float, its cylindrical inclosing case having an open lower end and closed top and lateral air vents, anda standpipe inclosing said case with an annular passage'between, substantially as described.

2. In a device of theclass-described, the combination of the cut ofi, the cylinder, the piston therein having operative connection with said out off, the cylinder valve, the float having operative connection with said valve, the cylindrical inclosing case for said float having a closed top and lateral air vents, and the stand pipe inclosing said case, having valve controlled air vents at its top, substantially as described.

3. In a device of the class described, the com- When the screw is raised and bination of the float, its cylindrical inclosing the inletand outlet of theair, substantially 1o casehavingan arched top and lateral air vents, as described.

the cylindrical chamber inclosing said case, In testimony whereof I have hereunto set and having an annularspace between the pipe my hand this 15th day of June, 1893. 5 connecting the lower end of the chamber with the water, the pipe leading from the top of JOHN WINTERS the chamber upward, and the valves in the Witnesses: top of said pipe adapted to be closed by the T. D. MERWIN,

pressure of the water, but freely permitting H. S. JOHNSON. 

